Benchmark Men's Flame Resistant Button Front Shirt, Lightweight, HRC 1, Beige, L 5.5 oz Flame resistant for the life of the garment, self extinguishing Lightweight, breathable and safe to wear directly against your skin. Tailored cuff with two button closure and large arm openings. Double needle top stitching, covered chest pockets with a pen holder and hi-temp buttons Flash Fire and Arc Flash Protection, NFPA 70E HRC 1, ATPV 6 calories/cm7